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Finding the Fourth Proportional to 207,363.20, 311,372.86 and 157,499.60

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Solution

The fourth proportional to 207,363.20, 311,372.86 and 157,499.60 is: 236,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,363.20 : 311,372.86 = 157,499.60 : x
  2. Step 2: Convert to fraction form
    207,363.20/311,372.86 = 157,499.60/x
  3. Step 3: Cross multiply
    207,363.20x = 311,372.86 × 157,499.60
  4. Step 4: Simplify right side
    207,363.20x = 49,041,100,900.86
  5. Step 5: Solve for x
    x = 49,041,100,900.86/207,363.20
  6. Step 6: Final answer
    x = 236,498.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.